When can the ERJ passenger door be opened from the inside?

The correct answer is that the ERJ passenger door can never be opened from the inside. This design feature enhances safety by ensuring that passengers cannot inadvertently open the door during critical phases of flight, such as takeoff and landing, or when the aircraft is still in motion on the ground.

When the aircraft is in either the air or potentially in an emergency situation, it is vital to maintain a secure environment, preventing the door from being opened unexpectedly. Additionally, this restriction helps prevent scenarios that could lead to accidents or exacerbate emergency situations by ensuring that the cabin remains secure. Therefore, understanding this design element is crucial for ensuring passenger safety and adhering to standard operating procedures.